I am trying to install the ATI/AMD proprietary FGLRX graphic driver on Mint 14 but am struggling a little, I believe that installing additional drivers should be done through the "software sources" application however when i click on the additional drivers tab it just says "no proprietary drivers are in use" and does not give me the option to install the ATI/AMD proprietary FGLRX graphic driver.

ATI RadeonHD 2x00 - 4xx0 cards If you have one of these cards, you do have the option of using the Catalyst Legacy driver, but only if you downgrade your Xserver version (the Catalyst Legacy driver does not support the kernel version (3.5) or the Xserver version (1.13) that Ubuntu Quantal/12.10 uses). This can be done really easily by following the instructions given at [[1]]. This PPA downgrades the Xserver and install a patched version of fglrx that supports kernel version 3.5 of Ubuntu Quantal.